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| Effluent Guidelines Commercial Hazardous Waste Combustor Subcategory of the Waste Combustors         Point Source CategoryProposed Rule Fact Sheet
January 1998

**Summary**

This proposed regulation would limit the discharge of pollutants into         waters of the United States and the introduction of pollutants into publicly-owned         treatment works by existing and new facilities in the Industrial Waste         Combustor Subcategory of the Waste Combustors Point Source Category. The         waste streams being limited are air pollution control wastewater, slag         quench and flue gas quench. EPA is publishing the proposed rules for public         comment.

**Environmental Benefits**        This proposed rule would provide increased protection to human health         and aquatic life by reducing discharges of pollutants by over 230 thousand         pounds of total suspended solids and metals. This would result in improved         water quality in 11 streams.

**Effluent Limitations Guidelines**        Effluent limitations guidelines are national regulations that establish         restrictions on the discharge of pollutants to surface waters or to publicly         owned treatment works by specific categories of industries. The requirements         are developed by EPA based on the application of specific process or treatment         technologies to control pollutant discharges. Although the guidelines         are developed based upon particular technologies, EPA does not require         that dischargers use these technologies. Individual facilities may meet         the requirements using whatever types of treatment technologies and process         changes they choose. Since 1974, EPA has promulgated effluent limitations         guidelines and standards for 51 industrial categories.

Under this proposed rule, industrial waste combustor facilities would         be required to achieve concentration-based limitations for air pollution         control wastewater, slag quench and flue gas quench produced as a result         of their combustion operations. Other wastewaters generated as a result         of combustion operations would not be regulated under this proposed rule.

The technology bases for the proposed limitations include two stages         of chemical precipitation, each followed by some form of solids separation         and sludge dewatering, with sand filtration for direct discharge and without         sand filtration for indirect discharge.

**Cost to Implement**        EPA estimates that the total annualized costs of the proposed rule would         be $2.2 million (in $1996), which EPA has determined to be economically         achievable. EPA did not identify any small businesses which would be impacted         by this regulation.

**Additional information**        For additional information concerning this rule, contact Ms. Samantha         Hopkins, Office of Water, Engineering and Analysis Division (4303) U.S.         Environmental Protection Agency, 401 M Street, SW, Washington, DC, 20460,         (202) 260-7149.

You may view the *Federal Register* notice and supporting development         documents that describe this rule on the Internet at: http://www.epa.gov/waterscience/chwc/         The notice gives complete information on how to obtain additional information,         how to review the complete public record for this proposed rulemaking,         and how to submit public comment.

**Workshop and Public Hearing**        EPA will conduct a workshop and public hearing on the pretreatment standards         of the rule. The combined meeting will be held on April 1, 1998, from         9:00 am to 10:30 am, instead of February 26, 1998, as initially announced         in the February 6, 1998, *Federal Register* proposal.

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